Find Out What Causes Vitamin D Deficiency

When the body doesn’t get enough vitamin D from food or sunlight, it suffers a vitamin D deficiency. Lack of vitamin D can result in osteoporosis, bone weakness, and damaged bones. Due to the fact that your body produces vitamin D from cholesterol when your skin is exposed to sunlight, it is sometimes referred to as the “sunshine vitamin.” Let’s know about what causes vitamin d deficiency.

What is vitamin D?

Vitamin D is a necessary vitamin that helps in controlling the body’s levels of calcium and phosphorus. It also contributes to maintaining healthy bone structure. As we will be talking about what causes vitamin d deficiency, it is important to know what vitamin D is in detail first.

Due to COVID-19, this vitamin has recently drawn a significant amount of attention for its role in immune health. Additionally, many vital physical activities and the health of your bones depend on it. 

There are several types of vitamin D, including cholecalciferol and ergocalciferol (vitamin D2) (vitamin D3). Fish, eggs, and fortified milk all contain vitamin D. When the skin is exposed to sunshine, it also produces it. When there is sunshine, vitamin D is stored in fat and released later when there isn’t any. It is important regarding what causes vitamin d deficiency.

Importance of Vitamin D

In addition to supporting immune and bone health, vitamin D is a fat-soluble vitamin that is essential for your body to function properly. It might even protect against cancer and several chronic illnesses. The vitamin is so important that knowing what causes vitamin d deficiency is really important. 

Causes of Vitamin D Deficiency

Although there is no one specific cause of deficiency, some basic factors or lifestyle choices may make you more likely to experience it overall. Below we will talk about what causes vitamin d deficiency. The following are some of the most common risk factors for vitamin D deficiency:


UVB rays can be blocked by airborne particles, preventing them from reaching the skin.

Living in a heavily polluted environment may also make it more difficult to go outside.


The body’s capacity to manufacture or absorb vitamin D is decreased by some medicines. Among others, these include cholesterol-lowering drugs and steroids.

Lifestyle factors:

Due to their jobs, health issues, a lack of outdoor space in their area, or other reasons, some people spend little time outside. They have much less possibilities to expose their skin to the sun. People who dress in full body coverings, whether for sun protection, cultural or religious reasons, may also be more subject to deficiencies.


Due to mobility difficulties, some people with obesity may spend less time outside.

Bariatric surgery patients may potentially experience issues with absorption. On the other hand, those with a BMI of 25 to 29.9 who were considered overweight had a lower chance of a deficiency than those who were not regarding what causes vitamin d deficiency.

Skin Type

As we are talking about what causes vitamin d deficiency, we have to admit that the skin type is one of the reasons for its deficiency. In comparison to people with lighter skin, persons with darker skin take more time in the sun to produce vitamin D. In order to prevent skin damage, those with fair skin or a history of skin cancer should limit their time in the sun.

Kidney And Liver Problems

Low vitamin D levels are more common in those with kidney and liver disease.

The body’s capacity to produce vitamin D or transform it into its active form may be hampered by several illnesses.

Breastfeeding infants

Because human milk contains little vitamin D, nursing babies run the danger of developing a deficiency. All breastfeeding infants should take a vitamin D supplement from their earliest days of life until they start drinking 1 liter or more of formula milk per day, according to the Centers for Disease Control and Prevention (CDC).

At this point, supplementation is no longer required because of the additional vitamin D in formula milk.


People of all ages might experience bone pain, weakness, and muscular aches due to vitamin D deficiency. Infants’ muscle spasms could be the earliest symptom of rickets. When a person has a significant vitamin D deficiency, it results in low calcium levels in the blood.

Infants born to pregnant women who are vitamin D deficiency may experience infant spasms. The face, hands, and feet could be affected by the spasms. Seizures may occur if the spasms are strong.


Now we know what causes vitamin d deficiency very well and many other things about the vitamin, so now let’s have a look at the treatment for vitamin d deficiency. The amount of vitamin D that an individual requires will vary depending on their age, UVB exposure, food, and overall health. 

Supplements are typically used to treat vitamin D deficiency. If a medical expert finds that you are deficient, they might suggest you some supplement or some vitamin D rich foods.

The recommended course of treatment for vitamin D insufficiency is oral supplements.

Although you may easily purchase them over-the-counter, you should consult a doctor for dose advice.

Food Sources

Your levels may be raised by eating more foods high in vitamin D such as,



Egg yolks

Milk and juices

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Signs and side effects of too much vitamin D

So we have covered all information about what causes vitamin d deficiency, what are the treatments, why this vitamin is so important etc. now let’s talk about what kind of side effects you may face if you gain too much of vitamin D. Overusing vitamin D pills is the primary cause of vitamin D toxicity. 

Because the body limits the quantity of vitamin D it makes, excessive sun exposure does not result in vitamin D toxicity. Below we have shared some of the most common side effects of high amounts of vitamin D.

  • High blood pressure
  • HIgh blood calcium levels
  • Problems with the kidneys
  • Digestion issues
  • Mental changes

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